Beating engine



July 31, 1928. 1,679,058

L. SHLICK BEATING ENGINE Original Filed Feb. 17. 921

h 21 7 Fig.1

13 10 a I A Fig.2

, l rwe'nl r, I L90 5 711M10 2y i 4 Q4229 Patented July 31, 1928.

UN TED S A E LEo sHLIoK, or BOSTQN, MassAon sn'rTs.

BEATING ENGINE.

O a l qn fil d bru y 7 1 2 e l Ne 445.736- v d at h s appli at n me February l, 1927-.

This invention relates to certainimprove ments in machines for the production of pulp as hereinafter set forth, these improvements being divided out from my application filed February 17, 1921, Serial No. 145, 736, which has become Patent 1, 6233M.

In the drawings forming part of this spec ification, Fig. 1 is a side sectional view of portions of a beating engine embodying my improvement-s. 'Fig. 2 is a sectional end View through the line 22 in Fig. 1. p

The numeral 1 designates the tub of the beating engine, 2 the beater roll and 3 the bed-plate. The backfall 4 is provided with an adjustable back-fall plate 5 preferably of metal, whose lower edge is stationary at the foot of the back-fall, but whose upper portion has a leaf 6 bent nearly at right angles thereto, which is located against the face of the back-fall next to the beater roll. Above the beater roll and back-fall is a hood 7 pivotally supported at 9 and retained in its position relative to the beater roll by lever-arms 1O rigid therewith and resting against shoes 11 attached to the bearing boxes 12, so that an upward jump of the beater roll will correspondingly raise the hood and thereby prevent the beater knives of the roll from striking the edge 13 of the deflector.

portion 14 of the hood.

Between the edge or lip 13 and the backfall I locate a deflecting curb 15 which is pivotally supported at 16 by screw rods 17 descending through'the hood 7. By turningthe hand wheels 18, the deflector curb can be raised and lowered to suit the character of the work. A screw rod 19 pivoted to an arm 20 ojecting from the curb 15, and having a 13nd wheel 21 exterior of the hood, enables the tip of the curb to be swung toward and from the beater roll.

The section of the hood between the lip 18 and its extremity 22 is made a semi-cylinder in order the better to cause the'stock to forcibly descend beyond the back-fellas it is shot upward by the rapidly revolving beater roll. To the extremity 22' there is hinged a curved gate 23 for the purpose of building up a head and thereby increasing the velocity of flow down and away from the back-fall, the curvature serving to prevent eddying and resistance to the flow. The lower edge of this gate board 23 descends below the level of the axis of the beater roll, and

SW? me ew he iderh y low he lev l ef th c est of the back-fall, and is made sufficiently heavy to hang below the surface of the stocli in-- jected into the catch 25, at the foot'et ing swiftly therethrough.

The function of the curb 15 is a very Ped n n n th tm n of: e tain grades of stock; for, if the back-fall is made the bacg-fall even when the current is flowhigh enough to produce the head required, I

re p d t ee emmodete the d ffer grades of the Stock.

The p ve de te 23 ul n t .Qh y ve its free edge below the level of the'crest of the baclefall under n rma-l conditions,but it should be sutiiciently heavy to retain such position even against the. rush, ofthe stock as it pours down the back-falland along the channel of the tub. Likewise, its lower edge should be below the level of the axis of the beater roll 2 even when the board 5 of the back-fall has been adjusted toa lower position, in order still further to. aid in building up a head for the stock im ediately after it leaves the beater roll.

What I claim as my invention is:

1. A beating engine comprising a tub, a beater roll, a back-fall, a hood located above the back-fall, and a deflector located between the back-fall and hood for dividing the stock 1nto upper and lower streams as it issues from the beater roll.

2. A beating engine comprising a tub, a beater roll, a bed-plate, a back-fall, a hood located above the back-fall, and an angularly adjustable deflector located between the back-fall and hood for dividing the stock into upper and lower streams as it issues from the beater roll.

3. A beating engine comprising a beater roll, a back-fall, an angularly adjustable deflector curb located close above said back-fall and presenting its edge close to said beater roll, and means for adjusting said curb to vary this distance, said curb being located to divide the stock into upper and lower streams as it issues from the beater roll.

l. A beating engine comprising a heater roll, a back-fall, a hood located above the back-fall and presenting an edge to said roll and pivotally supported at a point above the center line of the roll, an obliquely'disposed arm rigid with said hood, and a shoe connected with a bearing box of said roll and acting against said arm to elevate said hood when the roll moves upwardf 5. A beating engine comprising a beater roll, a baclcfall, a hood presenting an edge to said roll, a deflector curb located betweensaid back-fall and edge, screw rods supporting said curb pivotally, each having an operative hand-wheel, an arm rigid with said curb, and a screw rod and hand-wheel for angularly adjusting said curb, said screw rods passin outward through said hood and the hand-w ieels being exterior to the same.

6. A beating engine comprising a tub, a heater roll, a back-fall, and a gate board pivotally supported at its upper edge and having its lower edge below the level of the crest of said back-fall and weighted to keep it submerged below the surface of the flowing stock.

7. A beating engine comprising a tub, a

beater roll, a back-fall, and a gate board pivotally supported behind the back-fall on a transverse axis, and curved to present a convex surface toward the back-fall.

8. A beating engine comprising a tub, a beater roll, a baclcfall, and an inclined gate presenting its lower edge below the level of the crest of said back-fall, and acting gradually to build up a head for increasing the speed of flow of the stock.

9. A beating engine comprising a tub, a beater roll, a back-fall having an adjustable crest, a catch basin at the foot of the back- ,fall, and means for regulating the quantity of stock injected into said catch basin.

10. A beating engine comprising a tub, a beater roll, a bed-plate, and a back-fall having a metal plate one edge of which is at the foot of the back-fall and the other edge of which is bent to form a curved facing toward the beater roll.

11. A beating engine comprising a tub, a heater roll, a back-fall, a semi-cylindrical hood located above the back-fall with one edge close to the periphery of the roll, means for elevating said edge by the upward movement of said roll, and an angularly adjustable deflector supported by said hood close to the roll between the hood and backfall.

12. A beating engine comprising a tub, a heater roll, a back-fall, a curved hood located above the back-fall with one edge close to the roll, a. deflector located between the hood and back-fall, and means for adjusting said deflector both angularly and toward and from the roll.

13. A beating engine comprising a tub, a heater roll, a back-fall, a hood pivotally supported in a line vertically above the axis of the roll and presenting an edge close to the latter, an adj ustably supported deflector carried by the hood between the back-fall and hood, and means whereby the upward movement of t-he roll swings the hood and deflector away from it.

In testimony that I claim the foregoing invention, I have hereunto set my hand this 18th day of January, 1927.

LEO SHLICK. 

